[BUG]fastjson反序列化又出现NoClassDefFoundError

[ifreefly]

问题描述

java.lang.NoClassDefFoundError: xxx/xxx/xxx/xxx/bean/response/BaseResponse$Error
	at com.alibaba.fastjson2.reader.ORG_1_11_BaseResponse.readObject(Unknown Source)
	at com.alibaba.fastjson2.JSON.parseObject(JSON.java:1534)
	at com.xxx.xxx.xxx.xxx.JsonRpcUtils.decode(JsonRpcUtils.java:102)
	at com.xxx.xxx.xxx.xxx.LspService.handleLspData(LspService.java:1364)
	at com.xxx.xxx.xxx.xxx.LspService$3.onTextAvailable(LspService.java:1125)
	at com.intellij.execution.process.ProcessHandler$2.onTextAvailable(ProcessHandler.java:289)
	at com.intellij.execution.process.ProcessHandler.notifyTextAvailable(ProcessHandler.java:220)
	at com.intellij.execution.process.BaseOSProcessHandler$SimpleOutputReader.onTextAvailable(BaseOSProcessHandler.java:133)
	at com.intellij.util.io.BaseOutputReader.processInput(BaseOutputReader.java:213)
	at com.intellij.util.io.BaseOutputReader.readAvailableBlocking(BaseOutputReader.java:151)
	at com.intellij.util.io.BaseDataReader.readAvailable(BaseDataReader.java:72)
	at com.intellij.util.io.BaseDataReader.doRun(BaseDataReader.java:153)
	at com.intellij.util.ConcurrencyUtil.runUnderThreadName(ConcurrencyUtil.java:218)
	at com.intellij.util.io.BaseDataReader.lambda$start$0(BaseDataReader.java:48)
	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
	at java.base/java.util.concurrent.Executors$PrivilegedThreadFactory$1$1.run(Executors.java:702)
	at java.base/java.util.concurrent.Executors$PrivilegedThreadFactory$1$1.run(Executors.java:699)
	at java.base/java.security.AccessController.doPrivileged(AccessController.java:399)
	at java.base/java.util.concurrent.Executors$PrivilegedThreadFactory$1.run(Executors.java:699)
	at java.base/java.lang.Thread.run(Thread.java:840)
Caused by: java.lang.ClassNotFoundException: xxx.xxx.xxx.xxx.xxx.xxx.BaseResponse$Error
	at java.base/java.lang.ClassLoader.findClass(ClassLoader.java:723)
	at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:592)
	at com.alibaba.fastjson2.util.DynamicClassLoader.loadClass(DynamicClassLoader.java:190)
	at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:525)
	... 23 more

环境信息

请填写以下信息：

• OS信息： windows 10
• JDK信息： JDK 17
• 版本信息：fastjson 2.0.57

重现步骤

问题场景同
#3420
上一个issue调用的方法

User user = Json.to(User.class, jsonStr);

现在出问题场景的调用方法是

User user = JSON.parseObject(jsonStr, User.class);

问题完整复现场景:
User.Java

package com.demo;

import com.alibaba.fastjson2.annotation.JSONField;

public class User {

    @JSONField(name = "asss")
    private String os;
    private int age;
    private Address address;

    public String getOs() {
        return os;
    }

    public void setOs(String name) {
        this.os = name;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    public Address getAddress() {
        return address;
    }

    public void setAddress(Address address) {
        this.address = address;
    }

    @Override
    public String toString() {
        return "User{" +
                "name='" + os + '\'' +
                ", age=" + age +
                ", address=" + address +
                '}';
    }
}

Address.java

package com.demo;

public class Address {

    private String addr;

    public String getAddr() {
        return addr;
    }

    public void setAddr(String addr) {
        this.addr = addr;
    }

    @Override
    public String toString() {
        return "Address{" +
                "addr='" + addr + '\'' +
                '}';
    }
}

Example.java

package com.demo;

import com.alibaba.fastjson2.JSON;
import com.alibaba.fastjson2.JSONObject;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.nio.file.Files;
import java.nio.file.Paths;

public class Example {
    public static void main(String[] args) throws ClassNotFoundException, IOException {
        ExtClassLoader myClassLoader = new ExtClassLoader();
        String jsonStr = "{\"name\": \"bobo\", \"age\": 15, \"address\": { \"addr\": \"demo address\" }}";
        Class<?> userClass = myClassLoader.loadClass("com.demo.User");

        // 以下代码正常
        // JSONObject jsonObject = JSONObject.parseObject(jsonStr);
        // Object user = JSON.to(userClass, jsonObject);

        Object user = JSON.parseObject(jsonStr, userClass); // 出错代码片段
        System.out.println(user);
    }

    public static class ExtClassLoader
            extends ClassLoader {
        public ExtClassLoader() throws IOException {
        }

        @Override
        public Class<?> findClass(String name) throws ClassNotFoundException {
            String path = "D:\\foo\\bar\\OtherModule"
                    + File.separatorChar + name.replace('.', File.separatorChar) + ".class";
            if (!Files.exists(Paths.get(path))) {
                return super.findClass(name);
            }
            try {
                byte[] bytes = Files.readAllBytes(Paths.get(path));
                return defineClass(bytes, 0, bytes.length);
            } catch (IOException e) {
                e.printStackTrace();
                throw new ClassNotFoundException();
            }
        }
    }
}

期待的正确结果

可正常反序列化，不报错

相关日志输出

见前文问题描述

附加信息

无附加信息

[ifreefly]

已补充完整代码出错片段，见issue 问题完整复现场景: 中描述

[wisper-shadow]

试了一下，jvm配置-Dfastjson2.creator=reflect可以规避，但是不知道性能有多少损失
@wenshao 请帮忙澄清一下

fastjson2/core/src/main/java/com/alibaba/fastjson2/JSONFactory.java

Lines 307 to 310 in f1c8a93

	switch (JSONFactory.CREATOR) {
	case "reflect":
	case "lambda":
	compiler = JSONPathCompilerReflect.INSTANCE;